The TRIO boiler by PurePro combines high efficiencies, convenient serviceability, and Low Mass European 3-Pass Technology. The TRIO is constructed of GG20 rated cast iron for Thermal Shock Protection and durability. The TRIO has state-of-the-art design, Recirculating Flue Gas Technology which reduces emissions.

You can maximize system efficiency with the optional TRIO Energy Manager. The benefits include: Independent test results show burner run time is reduced by 10% – 20%, and the number of burner on/off cycles is reduced by 30%.; Integrated Microprocessor Economizer for fuel savings ; Indoor reset technology ; minimum of 10% reduction in heating fuel usage—guaranteed.